My sister suggested that we use the clicker on each other to get an idea of the timing. We decided it was a little like the "hot/cold" game where you hide something and then the only input you give the searcher is whether they are hot or cold, depending on how near they are. Except with the clicker, you only say when they're getting hot
But if the timing seems hard, practice on a human. It can be hilarious.
As far as the "command" words we say in our house: we have SIT, TOUCH (which is an essential one, in my opinion), MANNERS (which is a complicated sounding thing that basically is what we use to get two at once to stop crowding a doorway or staircase and just means "back up and sit, both of you", HERE, DOWN, NOW (that's our jackpot recall word), QUIT, and LEAVE IT.
That's aside from silly tricks like gimme your hand and so forth
The two we have are just turned 1 and not quite 2, and so we work a lot on impulse control and crowd control. Yes, two young basenjis is a crowd.